Less than 4 hours use.
Separate Signal Flex Direct SF-NDR40 included.
Specs.
15 inch speaker and tweeter.
75 watts/100 watts with external speaker.
Channels 1 & 2 have stereo 1/4" inputs.
Channel 3 features stereo 1/4" and mono XLR inputs.
Channel 41/4" display input.
Stereo mixer with 2-band EQ and primary results send/return.
Mic/Line channel with 3-band EQ and results send/return.
Screen input with level control and designate.
Headphone out with level control.
Built-in casters and deal with for easy moving.
4 Channels.
Weight: 72.00 lbs.
http://peavey.com/products/index.cfm/item/11/KB%26nbsp%3B4.